Valve.



E. MCC. SCOVILLEf VALVE,

APPLICATION FILED DEC. 10. I915.

1 ,1 91,481 i Patented J u ly 18', 1916.

Jinn

nuenun'macmnrlau soovI LE, or WAIPAHUJ. mimrronv or HAWAII.

" 'To all whom it'may concern 'Hawaii,

7 Be it known that 'I, EUGENE Msmma a citizen oi the United States,

residing at Waipahu, county'of Honolulu,- Territory of have inventedcertain new and use-' ful'lmprovements in Valves; and "I do herebydeclare the following to be a full,

" useful improvements disclosed in Letters Patent of the Unitednv 1,described therein, Qinner sealing gasket to 9 clear, and tlon,

The invention relates to certain newand in valves of the type States,'No. 1,161,257, granted to me-under date of November 23, 1915,. and hasfor, its object to provide a valve'of the character dirt, grit, oil andthe like,

which tends to accumulate thereon ;-to so construct the i v valvefandits seat that the structure affords the least impedance to the flow ofference' with the flow from adjacent valves,

- ,as' Well as the violent surgingand shocks incident to-the' old formsof valves. similarly employed, and furthermore, causes the valve disk toaccurately center 'upon its seat,

any tendency of the valvethereby obviating to ride or impinge upon thesealing gaskets,

' whereby the life of "In the accompanying drawing, there is illustratedin sectional elevation, apump valveembodying 1 7' Referring to thedrawings, '1 indicates the i receive one or more of theffluid' to passat each power stroke of the valve and its accessories is materially'prolonged and the efficiency of the apparatus to which it is applied islargely increased.

the invention.-

valve deck of the pump, which is adapted to the valves to permit thepump, as will be understood. Seated in 2, having central hub the mainbody portion 2 by means of suittoward the center to afford an outerseating exteriorly of the bevel an appropriate screw-threaded opening inthe valve deck is a valve seat thimble or ring a marginal rim or flange3 and a 4, which latter is connected to able webs 5. The interiorperipheral edge of the flange or rim 3 is beveled or inclined area forthe valve disk, and adjacent to and seat 6, the rim 3 is provided with aperipheral groove 7 inwhich there is mounted a sealing gasket :8,

, of'yielding or flexible material, which, like I I Specification ofLetters Patent. Application filed December 1 exact description of theinven-'- such as willenable others skilled in the. art to which" itappertains to make and use thesame.

with :mean s to flush the free thes'ame of I 7 liquid 'therethrough,thereby eliminating interof openings 16,

- ing ring .VALVE'.

0,191; serial N o. 66.180. is

' the similarE-rin g' in the patent aforesai normally out of engagementwith the .valve disk, but is adapted to be forced by the pressure ot.the fluid, against the valve when the fluid attempts 3 to escapethrough' the joint between the valve and the seat. a

The hub portion lj'is likewise provided with-a threaded socket adaptedto receivethe threaded-end of the v'alve stem or .spin

die '11, and: surrounding said spindle and formed in the hii'b, isa-recess adapted to receive an inner sealing gasket or ring 9f ofPatentedJuly18,19 1b.

flexible or"compressible material, which is I adapted to forma sealbetween the adjacent parts of th'e val've disk'and the hub, by thepressure of t e fluid whichpforces the gasket against the adjacentpartsof the. valve and hub respectively. 1 r

Slidably mounted upon the spindle 11 is a valve disk or member 12 havinga hub IJOI? tion 13 the main body portion having a "generally dish shapeinvolving a substan-. tially fiatseating area 15, which engages 'acorrespondingly formed area foil-the hub 4 and'a peripheral beveledportion 14, which engages and cooperates with the beveled 'seat area 6,thereby producing two metal between the valve and its seat. 'The' valve1s normally'held to itsto metal seating areas seatby means of a helicalspring 20, surrounding the hub 13 and the spindle 11 and held in placeby means of a suitable lock nut 21.' I

The valve properv is provided witha series the junction preferablylocated adjacent of the hub and disk portion thereof, andthereforeadjacent to the seal-.

9 in the .hub 4: which, when the valve is closed, admits the fluidpressure 'on the rear side thereof to the sealing gasket 9 to force thelatter-intointimate engage- .ment .iwith -the adjacent-portions of thevalve, and when th and induce a flow of fluid over the face of evalve isopen to afford the sealing gasket 9 to free the latter of dirt, grit, o1l=and the like, which tends to that damageto' the accumulate thereon, sov sealing gasket and the seating areas between the valve and the hub 4:is practically ob- .viated' and the life of the valve thereby greatlyprolonged. v

*The peculiar flaring or general dish-shape of the operative face of thevalve 12', in con-. junction with the beveled form of the outer seatingarea 6 permits the through fluid to pass the valve with the leastpossiblev change .in the direction of flow, thereby lnsures an accuratecentering of the'valve at all times, thereby preventing the valve ridingupon or impinging against the sealing gaskets, which action would tendto distort and damage the gaskets and prevent their proper functioning.

Valves of the type described under actual service conditions are foundto eliminate practically all of the hydraulic shocks and surgingincident to the old types, which are injurious to the pump and its.fittings.-

' Furthermore. by actual test, it has been demonstrated that theparticular form of .valve Will pass the same quantity of fluid with 40%less lift than the ordinary valve, so that the pump operates smdothlyand quietly Without any of the usuahhydraulic shocks and Water hammer inthe discharge line.

While the invention has been illustrated as appliedto pump check valves,it will be I, understood it is not limited to this particular use, butmay be applied tov valves of various types with out spirit of theinvention.

WVhat I claim is:

1. A valve device comprising a valve seat having central and peripheralseating areas,

a valve adapted to directly engage said areas,

and a gasket of eolnpressible material associated with the centralseating area and adapted to be forced by fluid pressure against, thevalve, said valve having openings theretln'ough adjacent said gasket toinduce a flow of fluid over the gasket and I adjacent seating area toclean the same When the valve is open.

2. A valve device comprising a valve seat having central and peripheralseating areas, a "valve adapted to directly engage said areas, andgaskets of compressible material associated withthe cen'tralandpedeparting from the ripheral seating areas and adapted to be forced bythe fluid pressure against the valve, said valve having openings therethrough adjacent the inner gasket to induce a flow of fluidover thegasket and adjacent seating areato clean the same when the valve isopen.

v3. A valve device comprising a valve seat having a central seating areaand a beveled peripheral seating area, a valve having a generallydish-shaped face adapted to directly engage said areas, and a gasket ofcompressible material positioned Within a recess adjacent the centralseating area and adapted to be forced by the fluid pressure against thevalve, said valve having openings therethrough adjacent said gasket toinduce a flow of fluid over. the gasket and the adjacent seating area toclean the same when the valve is open.

at. A valve device comprising a valve seat having a central seating areaand a beveled peripheral seating area, a valve having a generallydish-shaped face adapted to directly engage said areas, and gaskets ofcompressible material positioned in recesses adjacent the central andperipheral seating areas and adapted to be forced by the fluid pressureagainst the valve, said valve having openings therethrough adjacent theinner gasket to induce avflow of "fluid over the gasket and' theadjacent seating area to clean the same when the valve is open.

5. A valve device comprising a valve seat having a rim and a centralhub, a

beveled seating area on the rim, a seating area on the hub, a valvehaving a generally dish-shaped face adapted to directly engagesaid-areas, and flexible gaskets positioned in recesses adjacent theseating areas and adapted to be forced by the flow of fluid pressureagainst the valve,'said valve having openings therethrough adjacent thegasket carried by the hub to induce a flow of fluid over'the gasket andadjacent seating area to clean the same when the valve is open.

In testimony whereof I aflix my signature, in presence of two witnesses;

EUGENE MGCLELLAN SCOVILLE. Witnesses v P, H. BURNETTE, JOE ARNDRADE.

